The aim is to reverse the decline in the number of tree species or at least to preserve the "genetic material" of all of them.

其目的是扭转树种数量下降的趋势，或至少保存所有树种的“遗传物质”。

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The function principle, structure and material performance of fixed torque bolt are studied in the way of Reverse Engineer in this thesis.

本论文对定扭矩螺栓的功能原理、结构以及材料性能等进行了反求分析。

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All had been evaluated using a slower but highly accurate test called real-time reverse transcription-polymerase chain reaction, or rRT-PCR, which checks for the genetic material of the virus.

应用一种缓慢但高度准确的试验，检测病毒的基因物质，叫即时逆转录-聚合酶链反应，或是rRT - P CR，全部做了评价。

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So this is trying to reverse them that tradition actually get students in and engaged in the course material.

因此这也是试图将学生,从这种传统中扭转出来,从而使他们能更专注于课堂内容。

麻省理工公开课 - 媒体、教育、市场课程节选

Reverse logistics means controlling the flow of material, inventory and finished goods from point of consumption to point of origin, for the purpose of recapturing value or proper disposal.

FORBES: Could a closed-loop system be the solution to reducing waste?

In many cases, the Penrose inquiry has offered assurances of confidentiality to witnesses, promising that material will not be published - but reserving the right to reverse that assurance.

BBC: Equitable probe hit by evidence snags